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/* Copyright (c) 1997 Regents of the University of California */ |
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#ifndef lint |
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< |
static char SCCSid[] = "$SunId$ LBL"; |
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> |
static const char RCSid[] = "$Id$"; |
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#endif |
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|
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/* |
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* Calibrate a scanned MacBeth Color Checker Chart |
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* |
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#include <stdio.h> |
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#include <math.h> |
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< |
#ifdef MSDOS |
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< |
#include <fcntl.h> |
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< |
#endif |
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> |
#include <time.h> |
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> |
|
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> |
#include "platform.h" |
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> |
#include "paths.h" |
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#include "rtio.h" |
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#include "color.h" |
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#include "resolu.h" |
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#include "pmap.h" |
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#include "warp3d.h" |
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#include "mx3.h" |
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|
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/* MacBeth colors */ |
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#define DarkSkin 0 |
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#define Neutral5 21 |
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#define Neutral35 22 |
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#define Black 23 |
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/* computed from 5nm spectral measurements */ |
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> |
/* computed from 10nm spectral measurements */ |
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/* CIE 1931 2 degree obs, equal-energy white */ |
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float mbxyY[24][3] = { |
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< |
{0.462, 0.3769, 0.0932961}, /* DarkSkin */ |
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< |
{0.4108, 0.3542, 0.410348}, /* LightSkin */ |
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{0.2626, 0.267, 0.181554}, /* BlueSky */ |
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< |
{0.36, 0.4689, 0.108447}, /* Foliage */ |
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< |
{0.2977, 0.2602, 0.248407}, /* BlueFlower */ |
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< |
{0.2719, 0.3485, 0.401156}, /* BluishGreen */ |
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{0.52, 0.4197, 0.357899}, /* Orange */ |
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< |
{0.229, 0.1866, 0.103911}, /* PurplishBlue */ |
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< |
{0.4909, 0.3262, 0.242615}, /* ModerateRed */ |
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< |
{0.3361, 0.2249, 0.0600102}, /* Purple */ |
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< |
{0.3855, 0.4874, 0.42963}, /* YellowGreen */ |
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< |
{0.4853, 0.4457, 0.476343}, /* OrangeYellow */ |
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< |
{0.2026, 0.1369, 0.0529249}, /* Blue */ |
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< |
{0.3007, 0.4822, 0.221226}, /* Green */ |
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< |
{0.5805, 0.3238, 0.162167}, /* Red */ |
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< |
{0.4617, 0.472, 0.64909}, /* Yellow */ |
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< |
{0.4178, 0.2625, 0.233662}, /* Magenta */ |
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< |
{0.2038, 0.2508, 0.167275}, /* Cyan */ |
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< |
{0.3358, 0.337, 0.916877}, /* White */ |
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{0.3338, 0.3348, 0.604678}, /* Neutral.8 */ |
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{0.3333, 0.3349, 0.364566}, /* Neutral.65 */ |
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{0.3353, 0.3359, 0.200238}, /* Neutral.5 */ |
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{0.3363, 0.336, 0.0878721}, /* Neutral.35 */ |
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{0.3346, 0.3349, 0.0308383} /* Black */ |
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{0.421236, 0.361196, 0.103392}, /* DarkSkin */ |
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> |
{0.40868, 0.358157, 0.352867}, /* LightSkin */ |
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> |
{0.265063, 0.271424, 0.185124}, /* BlueSky */ |
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> |
{0.362851, 0.43055, 0.132625}, /* Foliage */ |
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> |
{0.28888, 0.260851, 0.233138}, /* BlueFlower */ |
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{0.277642, 0.365326, 0.416443}, /* BluishGreen */ |
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{0.524965, 0.40068, 0.312039}, /* Orange */ |
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{0.225018, 0.190392, 0.114999}, /* PurplishBlue */ |
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{0.487199, 0.315372, 0.198616}, /* ModerateRed */ |
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{0.314245, 0.227231, 0.0646047}, /* Purple */ |
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{0.396202, 0.489732, 0.440724}, /* YellowGreen */ |
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{0.493297, 0.435299, 0.43444}, /* OrangeYellow */ |
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{0.198191, 0.149265, 0.0588122}, /* Blue */ |
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{0.322838, 0.487601, 0.229258}, /* Green */ |
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{0.561833, 0.321165, 0.126978}, /* Red */ |
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{0.468113, 0.467021, 0.605289}, /* Yellow */ |
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{0.397128, 0.248535, 0.201761}, /* Magenta */ |
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{0.209552, 0.276256, 0.190917}, /* Cyan */ |
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{0.337219, 0.339042, 0.912482}, /* White */ |
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{0.333283, 0.335077, 0.588297}, /* Neutral.8 */ |
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{0.332747, 0.334371, 0.3594}, /* Neutral.65 */ |
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{0.331925, 0.334202, 0.19114}, /* Neutral.5 */ |
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{0.330408, 0.332615, 0.0892964}, /* Neutral.35 */ |
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{0.331841, 0.331405, 0.0319541}, /* Black */ |
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}; |
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|
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COLOR mbRGB[24]; /* MacBeth RGB values */ |
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#define RG_ORIG 02 /* original color region */ |
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#define RG_CORR 04 /* corrected color region */ |
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|
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#ifndef DISPCOM |
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#define DISPCOM "ximage -op \"%s\"" |
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#endif |
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|
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int scanning = 1; /* scanned input (or recorded output)? */ |
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double irrad = 1.0; /* irradiance multiplication factor */ |
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int rawmap = 0; /* put out raw color mapping? */ |
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FILE *debugfp = NULL; /* debug output picture */ |
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char *progname; |
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|
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< |
extern char *malloc(); |
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> |
static void init(void); |
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> |
static int chartndx(int x, int y, int *np); |
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> |
static void getpicture(void); |
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> |
static void getcolors(void); |
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> |
static void bresp(COLOR y, COLOR x); |
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> |
static void compute(void); |
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> |
static void putmapping(void); |
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> |
static void compsoln(COLOR cin[], COLOR cout[], int n); |
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> |
static void cwarp(void); |
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> |
static int cvtcolor(COLOR cout, COLOR cin); |
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> |
static int cresp(COLOR cout, COLOR cin); |
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> |
static void xyY2RGB(COLOR rgbout, float xyYin[3]); |
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> |
static void picdebug(void); |
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> |
static void clrdebug(void); |
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> |
static void getpos(char *name, int bnds[2], FILE *fp); |
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> |
static void pickchartpos(char *pfn); |
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|
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|
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< |
main(argc, argv) |
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< |
int argc; |
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< |
char **argv; |
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> |
int |
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> |
main( |
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> |
int argc, |
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> |
char **argv |
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> |
) |
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{ |
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int i; |
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|
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perror(argv[i]); |
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exit(1); |
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} |
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< |
#ifdef MSDOS |
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< |
setmode(fileno(debugfp), O_BINARY); |
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< |
#endif |
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> |
SET_FILE_BINARY(debugfp); |
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newheader("RADIANCE", debugfp); /* start */ |
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printargs(argc, argv, debugfp); /* header */ |
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break; |
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bounds[3][1] = atoi(argv[++i]); |
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scanning = 2; |
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break; |
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+ |
case 'P': /* pick position */ |
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+ |
scanning = 3; |
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break; |
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case 'i': /* irradiance factor */ |
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i++; |
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if (badarg(argc-i, argv+i, "f")) |
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exit(1); |
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} |
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if (scanning) { /* load input picture header */ |
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< |
#ifdef MSDOS |
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< |
setmode(fileno(stdin), O_BINARY); |
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< |
#endif |
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> |
SET_FILE_BINARY(stdin); |
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if (checkheader(stdin, COLRFMT, NULL) < 0 || |
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fgetresolu(&xmax, &ymax, stdin) < 0) { |
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fprintf(stderr, "%s: bad input picture\n", progname); |
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exit(1); |
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} |
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+ |
if (scanning == 3) { |
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if (i >= argc) |
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goto userr; |
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+ |
pickchartpos(argv[i]); |
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scanning = 2; |
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} |
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} else { /* else set default xmax and ymax */ |
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xmax = 512; |
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ymax = 2*512/3; |
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|
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printf("# Color correspondence produced by:\n#\t\t"); |
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printargs(argc, argv, stdout); |
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printf("#\tUsage: pcwarp -m %s uncorrected.pic > corrected.pic\n", |
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> |
printf("#\tUsage: pcwarp %s uncorrected.hdr > corrected.hdr\n", |
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i+1 < argc ? argv[i+1] : "{this_file}"); |
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printf("#\t Or: pcond [options] -m %s orig.pic > output.pic\n", |
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> |
printf("#\t Or: pcond [options] -m %s orig.hdr > output.hdr\n", |
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i+1 < argc ? argv[i+1] : "{this_file}"); |
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for (j = 0; j < 24; j++) |
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printf("%f %f %f %f %f %f\n", |
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/* print header */ |
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printf("{\n\tColor correction file computed by:\n\t\t"); |
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printargs(argc, argv, stdout); |
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printf("\n\tUsage: pcomb -f %s uncorrected.pic > corrected.pic\n", |
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> |
printf("\n\tUsage: pcomb -f %s uncorrected.hdr > corrected.hdr\n", |
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i+1 < argc ? argv[i+1] : "{this_file}"); |
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if (!scanning) |
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printf("\t Or: pcond [options] -f %s orig.pic > output.pic\n", |
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> |
printf("\t Or: pcond [options] -f %s orig.hdr > output.hdr\n", |
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i+1 < argc ? argv[i+1] : "{this_file}"); |
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printf("}\n"); |
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putmapping(); /* put out color mapping */ |
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} |
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< |
if (debugfp != NULL) /* put out debug picture */ |
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> |
if (debugfp != NULL) { /* put out debug picture */ |
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if (scanning) |
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picdebug(); |
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else |
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clrdebug(); |
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+ |
} |
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exit(0); |
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userr: |
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fprintf(stderr, |
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< |
"Usage: %s [-d dbg.pic][-p xul yul xur yur xll yll xlr ylr][-i irrad][-m] input.pic [output.{cal|cwp}]\n", |
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> |
"Usage: %s [-d dbg.hdr][-P | -p xul yul xur yur xll yll xlr ylr][-i irrad][-m] input.hdr [output.{cal|cwp}]\n", |
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progname); |
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< |
fprintf(stderr, " or: %s [-d dbg.pic][-i irrad][-m] -c [xyY.dat [output.{cal|cwp}]]\n", |
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> |
fprintf(stderr, " or: %s [-d dbg.hdr][-i irrad][-m] -c [xyY.dat [output.{cal|cwp}]]\n", |
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progname); |
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exit(1); |
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+ |
return 1; /* pro forma return */ |
| 281 |
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} |
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|
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|
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< |
init() /* initialize */ |
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> |
static void |
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> |
init(void) /* initialize */ |
| 286 |
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{ |
| 287 |
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double quad[4][2]; |
| 288 |
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register int i; |
| 308 |
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} |
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|
| 310 |
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|
| 311 |
< |
int |
| 312 |
< |
chartndx(x, y, np) /* find color number for position */ |
| 313 |
< |
int x, y; |
| 314 |
< |
int *np; |
| 311 |
> |
static int |
| 312 |
> |
chartndx( /* find color number for position */ |
| 313 |
> |
int x, |
| 314 |
> |
int y, |
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> |
int *np |
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> |
) |
| 317 |
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{ |
| 318 |
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double ipos[3], cpos[3]; |
| 319 |
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int ix, iy; |
| 342 |
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} |
| 343 |
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|
| 344 |
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|
| 345 |
< |
getpicture() /* load in picture colors */ |
| 345 |
> |
static void |
| 346 |
> |
getpicture(void) /* load in picture colors */ |
| 347 |
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{ |
| 348 |
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COLR *scanln; |
| 349 |
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COLOR pval; |
| 381 |
|
scalecolor(inpRGB[i], d); |
| 382 |
|
inpflags |= 1L<<i; |
| 383 |
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} |
| 384 |
< |
free((char *)scanln); |
| 384 |
> |
free((void *)scanln); |
| 385 |
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} |
| 386 |
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|
| 387 |
|
|
| 388 |
< |
getcolors() /* get xyY colors from standard input */ |
| 388 |
> |
static void |
| 389 |
> |
getcolors(void) /* get xyY colors from standard input */ |
| 390 |
|
{ |
| 391 |
|
int gotwhite = 0; |
| 392 |
|
COLOR whiteclr; |
| 394 |
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float xyYin[3]; |
| 395 |
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|
| 396 |
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while (fgetval(stdin, 'i', &n) == 1) { /* read colors */ |
| 397 |
< |
if (n < 0 | n > 24 || |
| 397 |
> |
if ((n < 0) | (n > 24) || |
| 398 |
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fgetval(stdin, 'f', &xyYin[0]) != 1 || |
| 399 |
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fgetval(stdin, 'f', &xyYin[1]) != 1 || |
| 400 |
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fgetval(stdin, 'f', &xyYin[2]) != 1 || |
| 401 |
< |
xyYin[0] < 0. | xyYin[1] < 0. || |
| 401 |
> |
(xyYin[0] < 0.) | (xyYin[1] < 0.) || |
| 402 |
|
xyYin[0] + xyYin[1] > 1.) { |
| 403 |
|
fprintf(stderr, "%s: bad color input data\n", |
| 404 |
|
progname); |
| 434 |
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} |
| 435 |
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|
| 436 |
|
|
| 437 |
< |
bresp(y, x) /* piecewise linear interpolation of primaries */ |
| 438 |
< |
COLOR y, x; |
| 437 |
> |
static void |
| 438 |
> |
bresp( /* piecewise linear interpolation of primaries */ |
| 439 |
> |
COLOR y, |
| 440 |
> |
COLOR x |
| 441 |
> |
) |
| 442 |
|
{ |
| 443 |
|
register int i, n; |
| 444 |
|
|
| 455 |
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} |
| 456 |
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|
| 457 |
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|
| 458 |
< |
compute() /* compute color mapping */ |
| 458 |
> |
static void |
| 459 |
> |
compute(void) /* compute color mapping */ |
| 460 |
|
{ |
| 461 |
|
COLOR clrin[24], clrout[24]; |
| 462 |
|
long cflags; |
| 471 |
|
/* compute piecewise luminance curve */ |
| 472 |
|
for (i = 0; i < NMBNEU; i++) { |
| 473 |
|
copycolor(bramp[i][0], inpRGB[mbneu[i]]); |
| 474 |
+ |
for (n = i ? 3 : 0; n--; ) |
| 475 |
+ |
if (colval(bramp[i][0],n) <= |
| 476 |
+ |
colval(bramp[i-1][0],n)+1e-7) { |
| 477 |
+ |
fprintf(stderr, |
| 478 |
+ |
"%s: non-increasing neutral patch\n", progname); |
| 479 |
+ |
exit(1); |
| 480 |
+ |
} |
| 481 |
|
copycolor(bramp[i][1], mbRGB[mbneu[i]]); |
| 482 |
|
} |
| 483 |
|
/* compute color space gamut */ |
| 521 |
|
} |
| 522 |
|
|
| 523 |
|
|
| 524 |
< |
putmapping() /* put out color mapping */ |
| 524 |
> |
static void |
| 525 |
> |
putmapping(void) /* put out color mapping */ |
| 526 |
|
{ |
| 527 |
|
static char cchar[3] = {'r', 'g', 'b'}; |
| 528 |
|
register int i, j; |
| 570 |
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} |
| 571 |
|
|
| 572 |
|
|
| 573 |
< |
compsoln(cin, cout, n) /* solve 3xN system using least-squares */ |
| 574 |
< |
COLOR cin[], cout[]; |
| 575 |
< |
int n; |
| 573 |
> |
static void |
| 574 |
> |
compsoln( /* solve 3xN system using least-squares */ |
| 575 |
> |
COLOR cin[], |
| 576 |
> |
COLOR cout[], |
| 577 |
> |
int n |
| 578 |
> |
) |
| 579 |
|
{ |
| 580 |
|
extern double mx3d_adjoint(), fabs(); |
| 581 |
|
double mat[3][3], invmat[3][3]; |
| 633 |
|
} |
| 634 |
|
|
| 635 |
|
|
| 636 |
< |
cwarp() /* compute color warp map */ |
| 636 |
> |
static void |
| 637 |
> |
cwarp(void) /* compute color warp map */ |
| 638 |
|
{ |
| 639 |
|
register int i; |
| 640 |
|
|
| 650 |
|
} |
| 651 |
|
|
| 652 |
|
|
| 653 |
< |
int |
| 654 |
< |
cvtcolor(cout, cin) /* convert color according to our mapping */ |
| 655 |
< |
COLOR cout, cin; |
| 653 |
> |
static int |
| 654 |
> |
cvtcolor( /* convert color according to our mapping */ |
| 655 |
> |
COLOR cout, |
| 656 |
> |
COLOR cin |
| 657 |
> |
) |
| 658 |
|
{ |
| 659 |
|
COLOR ctmp; |
| 660 |
|
int clipped; |
| 673 |
|
} |
| 674 |
|
|
| 675 |
|
|
| 676 |
< |
int |
| 677 |
< |
cresp(cout, cin) /* transform color according to matrix */ |
| 678 |
< |
COLOR cout, cin; |
| 676 |
> |
static int |
| 677 |
> |
cresp( /* transform color according to matrix */ |
| 678 |
> |
COLOR cout, |
| 679 |
> |
COLOR cin |
| 680 |
> |
) |
| 681 |
|
{ |
| 682 |
|
colortrans(cout, solmat, cin); |
| 683 |
|
return(clipgamut(cout, bright(cout), CGAMUT, colmin, colmax)); |
| 684 |
|
} |
| 685 |
|
|
| 686 |
|
|
| 687 |
< |
xyY2RGB(rgbout, xyYin) /* convert xyY to RGB */ |
| 688 |
< |
COLOR rgbout; |
| 689 |
< |
register float xyYin[3]; |
| 687 |
> |
static void |
| 688 |
> |
xyY2RGB( /* convert xyY to RGB */ |
| 689 |
> |
COLOR rgbout, |
| 690 |
> |
register float xyYin[3] |
| 691 |
> |
) |
| 692 |
|
{ |
| 693 |
|
COLOR ctmp; |
| 694 |
|
double d; |
| 702 |
|
} |
| 703 |
|
|
| 704 |
|
|
| 705 |
< |
picdebug() /* put out debugging picture */ |
| 705 |
> |
static void |
| 706 |
> |
picdebug(void) /* put out debugging picture */ |
| 707 |
|
{ |
| 708 |
|
static COLOR blkcol = BLKCOLOR; |
| 709 |
|
COLOR *scan; |
| 755 |
|
} |
| 756 |
|
/* clean up */ |
| 757 |
|
fclose(debugfp); |
| 758 |
< |
free((char *)scan); |
| 758 |
> |
free((void *)scan); |
| 759 |
|
} |
| 760 |
|
|
| 761 |
|
|
| 762 |
< |
clrdebug() /* put out debug picture from color input */ |
| 762 |
> |
static void |
| 763 |
> |
clrdebug(void) /* put out debug picture from color input */ |
| 764 |
|
{ |
| 765 |
|
static COLR blkclr = BLKCOLR; |
| 766 |
|
COLR mbclr[24], cvclr[24], orclr[24]; |
| 826 |
|
} |
| 827 |
|
/* clean up */ |
| 828 |
|
fclose(debugfp); |
| 829 |
< |
free((char *)scan); |
| 829 |
> |
free((void *)scan); |
| 830 |
> |
} |
| 831 |
> |
|
| 832 |
> |
|
| 833 |
> |
static void |
| 834 |
> |
getpos( /* get boundary position */ |
| 835 |
> |
char *name, |
| 836 |
> |
int bnds[2], |
| 837 |
> |
FILE *fp |
| 838 |
> |
) |
| 839 |
> |
{ |
| 840 |
> |
char buf[64]; |
| 841 |
> |
|
| 842 |
> |
fprintf(stderr, "\tSelect corner: %s\n", name); |
| 843 |
> |
if (fgets(buf, sizeof(buf), fp) == NULL || |
| 844 |
> |
sscanf(buf, "%d %d", &bnds[0], &bnds[1]) != 2) { |
| 845 |
> |
fprintf(stderr, "%s: read error from display process\n", |
| 846 |
> |
progname); |
| 847 |
> |
exit(1); |
| 848 |
> |
} |
| 849 |
> |
} |
| 850 |
> |
|
| 851 |
> |
|
| 852 |
> |
static void |
| 853 |
> |
pickchartpos( /* display picture and pick chart location */ |
| 854 |
> |
char *pfn |
| 855 |
> |
) |
| 856 |
> |
{ |
| 857 |
> |
char combuf[PATH_MAX]; |
| 858 |
> |
FILE *pfp; |
| 859 |
> |
|
| 860 |
> |
sprintf(combuf, DISPCOM, pfn); |
| 861 |
> |
if ((pfp = popen(combuf, "r")) == NULL) { |
| 862 |
> |
perror(combuf); |
| 863 |
> |
exit(1); |
| 864 |
> |
} |
| 865 |
> |
fputs("Use middle mouse button to select chart corners:\n", stderr); |
| 866 |
> |
getpos("upper left (dark skin)", bounds[0], pfp); |
| 867 |
> |
getpos("upper right (bluish green)", bounds[1], pfp); |
| 868 |
> |
getpos("lower left (white)", bounds[2], pfp); |
| 869 |
> |
getpos("lower right (black)", bounds[3], pfp); |
| 870 |
> |
fputs("Got it -- quit display program.\n", stderr); |
| 871 |
> |
pclose(pfp); |
| 872 |
|
} |
